/* === Reset & Base === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #ffffff;
  --bg-subtle: #f8fafc;
  --bg-dark: #0f172a;
  --text: #0f172a;
  --text-2: #475569;
  --text-3: #94a3b8;
  --border: #e2e8f0;
  --border-2: #cbd5e1;
  --color-success: #16a34a;
  --color-error: #dc2626;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-w: 1200px;
  --pad-x: 48px;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

/* === Layout === */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

/* === Nav === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.015em;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--text);
  color: #fff;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-2);
  padding: 6px 14px;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
}

.nav-links a:hover {
  color: var(--text);
  background: var(--bg-subtle);
}

.nav-links .nav-cta {
  color: var(--text);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 7px 16px;
  margin-left: 8px;
  transition: background 0.15s, border-color 0.15s;
}

.nav-links .nav-cta:hover {
  background: #f1f5f9;
  border-color: var(--border-2);
}

/* === Hero === */
.hero {
  background: var(--bg-dark);
  padding: 160px 0 140px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(148, 163, 184, 0.07) 0%, transparent 60%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.04em;
  color: #fff;
  max-width: 780px;
}

.hero-sub {
  margin-top: 28px;
  font-size: 1.125rem;
  line-height: 1.72;
  color: rgba(255, 255, 255, 0.58);
  max-width: 600px;
}

.hero-actions {
  margin-top: 52px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.btn-hero {
  display: inline-flex;
  align-items: center;
  padding: 13px 28px;
  font-size: 0.9rem;
  font-weight: 500;
  font-family: var(--font);
  background: #fff;
  color: var(--text);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: opacity 0.15s, box-shadow 0.15s;
  text-decoration: none;
  letter-spacing: -0.005em;
}

.btn-hero:hover {
  opacity: 0.92;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.18);
}

/* === Section Base === */
.section {
  padding: 96px 0;
}

.section-alt {
  background: var(--bg-subtle);
}

.section-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: #64748b;
  margin-bottom: 44px;
}

/* === Focus Areas === */
.focus-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.focus-card {
  padding: 40px 36px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.focus-card:hover {
  border-color: var(--border-2);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
}

.focus-card h3 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-bottom: 14px;
  color: var(--text);
}

.focus-card p {
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.75;
}

/* === Selected Properties === */
.properties-intro {
  font-size: 1rem;
  color: var(--text-2);
  line-height: 1.75;
  max-width: 560px;
  margin-bottom: 32px;
}

.property-card {
  padding: 28px 32px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
  max-width: 460px;
  margin-bottom: 20px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.property-card:hover {
  border-color: var(--border-2);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05);
}

.property-tag {
  display: block;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-3);
  margin-bottom: 10px;
}

.property-name {
  display: block;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 7px;
  text-decoration: none;
  letter-spacing: -0.015em;
}

.property-name:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--border-2);
}

.property-desc {
  display: block;
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.55;
}

.properties-note {
  font-size: 0.85rem;
  color: var(--text-3);
  max-width: 480px;
  line-height: 1.65;
}

/* === Challenges + How We Work (2-col) === */
.work-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.scenario-list {
  list-style: none;
  padding: 0;
}

.scenario-list li {
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.65;
  padding: 14px 0 14px 20px;
  position: relative;
  border-bottom: 1px solid var(--border);
}

.scenario-list li:first-child {
  border-top: 1px solid var(--border);
}

.scenario-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 21px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-3);
}

/* === Steps === */
.steps {
  display: flex;
  flex-direction: column;
}

.step {
  display: grid;
  grid-template-columns: 44px 1fr;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}

.step:first-child {
  border-top: 1px solid var(--border);
}

.step-num {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
  padding-top: 3px;
  letter-spacing: 0.02em;
}

.step-body h4 {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 6px;
  color: var(--text);
}

.step-body p {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.65;
}

/* === About === */
.about-inner {
  max-width: 640px;
}

.about-inner p {
  font-size: 1rem;
  color: var(--text-2);
  line-height: 1.85;
}

/* === Contact Section === */
.section-contact {
  background: var(--bg-subtle);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 480px;
  gap: 80px;
  align-items: start;
}

.contact-copy .section-label {
  margin-bottom: 20px;
}

.contact-heading {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.035em;
  margin-bottom: 18px;
  margin-top: -4px;
  color: var(--text);
}

.contact-copy p {
  font-size: 1rem;
  color: var(--text-2);
  line-height: 1.75;
  max-width: 340px;
}

/* === Contact Form === */
.contact-form-wrap {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 40px 36px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 7px;
}

.form-required {
  color: var(--text-3);
  font-weight: 400;
}

.form-input {
  display: block;
  width: 100%;
  font-family: var(--font);
  font-size: 0.9rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.form-input:focus {
  border-color: #94a3b8;
  box-shadow: 0 0 0 3px rgba(148, 163, 184, 0.15);
}

.form-input::placeholder {
  color: var(--text-3);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.form-status {
  font-size: 0.875rem;
  line-height: 1.5;
}

.form-status--success,
.form-status--error {
  margin-bottom: 12px;
}

.form-status--success {
  color: var(--color-success);
}

.form-status--error {
  color: var(--color-error);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 28px;
  font-size: 0.9rem;
  font-weight: 500;
  font-family: var(--font);
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all 0.15s;
  letter-spacing: -0.005em;
}

.btn-primary {
  background: var(--text);
  color: #fff;
}

.btn-primary:hover {
  background: #000;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.12);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-submit {
  width: 100%;
  margin-top: 16px;
}

/* Honeypot */
.hp-field {
  display: none;
}

/* === Footer === */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-3);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.footer-link {
  font-size: 0.8rem;
  color: var(--text-3);
  transition: color 0.15s;
}

.footer-link:hover {
  color: var(--text);
}

/* === Non-hero page top (e.g. Privacy) === */
.page-top {
  background: var(--bg);
  padding: 136px 0 80px;
}

.page-top-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  max-width: 600px;
  color: var(--text);
  margin-bottom: 0;
}

.privacy-link {
  text-decoration: underline;
  text-underline-offset: 3px;
  color: var(--text-2);
}

.privacy-link:hover {
  color: var(--text);
}

/* === Privacy Page === */
.privacy-body {
  max-width: 640px;
  margin-top: 48px;
}

.privacy-updated {
  font-size: 0.85rem;
  color: var(--text-3);
  margin-bottom: 40px;
}

.privacy-body h2 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-top: 36px;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.privacy-body p {
  font-size: 0.95rem;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 12px;
}

/* === Responsive === */
@media (max-width: 960px) {
  :root {
    --pad-x: 32px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-copy p {
    max-width: none;
  }

  .work-grid {
    grid-template-columns: 1fr;
    gap: 56px;
  }
}

@media (max-width: 768px) {
  :root {
    --pad-x: 24px;
  }

  .hero {
    padding: 120px 0 96px;
  }

  .section {
    padding: 72px 0;
  }

  .nav-links a:not(.nav-cta) {
    display: none;
  }

  .focus-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .focus-card {
    padding: 32px 28px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .contact-form-wrap {
    padding: 28px 24px 24px;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 100px 0 80px;
  }

  .hero h1 {
    font-size: 2.1rem;
    letter-spacing: -0.03em;
  }

  .hero-sub {
    font-size: 1rem;
    margin-top: 22px;
  }

  .hero-actions {
    margin-top: 36px;
  }

  .section {
    padding: 56px 0;
  }

  .contact-heading {
    font-size: 1.4rem;
  }
}